//前端分页
export function pagination(pageNo, pageSize, array) {
  let maxPage = Math.ceil(array.length / pageSize);
  pageNo = pageNo > maxPage ? maxPage : pageNo;
  let offset = (pageNo - 1) * pageSize;
  return (offset + pageSize >= array.length) ? array.slice(offset, array.length) : array.slice(offset, offset + pageSize);
}
/*数字前固定位数补0*/
export function preZero(num, n) {
  return (Array(n).join(0) + num).slice(-n);
}
//替换模板字符
export function setTempText(tempText = '',tempData){
  //uniapp中部分手机不支持?<=的写法
  /*let arr = tempText.match(/(?<=\{\{).*(?=\}\})/gm);
  if (tempData && arr){
    arr.forEach(k=>{
      if (tempData[k] || tempData[k] == '0') {
        tempText = tempText.replace(new RegExp('{{' +k+'}}','gm'),tempData[k])
      } else {
        tempText = tempText.replace(new RegExp('{{' +k+'}}','gm'),'')
      }
    })
  }*/
  let arr = tempText.match(/(\{\{).*(\}\})/gm);
  if (tempData && arr){
    arr.forEach(k=>{
      let field = k.replace('{{','').replace('}}','');
      if (tempData[field] || tempData[field] == '0') {
        tempText = tempText.replace(new RegExp('{{' +field+'}}','gm'),tempData[field])
      } else {
        tempText = tempText.replace(new RegExp('{{' +field+'}}','gm'),'')
      }
    })
  }
  return tempText;
}
//隐藏敏感字符串
export function hideSensitive(val,params){
	if (isString(params)){
		if (params == 'cellphone'){
			let mobile = String(val);
			let reg = /^(\d{3})\d{4}(\d{4})$/;
			return /\d{11}/.test(mobile) ? mobile.replace(reg, '$1****$2') : mobile;
		} else if (params == 'idcard'){
			let idcard = String(val);
			let reg = /^(\d{6})\d{8}(\d{4})$/;
			return /\d{17}[0-9xX]{1}/.test(idcard) ? idcard.replace(reg, '$1********$2') : idcard;
		}
	}
}
//获取当前时间戳(秒)
export function getStamp(){
  return parseInt(Date.parse(new Date()) / 1000);
}
//将固定格式的字符串转成时间戳
export function strtotime(date = ''){
	if (!date) return '';
	date = date.replace(/:|-|年|月|日/g,'-') //必须把日期'-'转为'/'
	date = date.replace(/ /g,'-'); 
	let arr = date.split("-"); 
	var stampDate = new Date(Date.UTC(arr[0],arr[1]-1,arr[2],arr[3]-8,arr[4],arr[5])); 
	return parseInt(stampDate.getTime()/1000); 
}
//按默认格式获取当前年月日时分秒
export function getTime() {
  return date('now','Y-m-d H:i:s');
}

export function date(stamp,cFormat) {
  if (arguments.length === 0) {
    return '';
  }
  let format = cFormat || 'Y-m-d H:i:s';
  format = format.replace(new RegExp(/Y/gm), '{Y}');
  format = format.replace(new RegExp(/m/gm), '{m}');
  format = format.replace(new RegExp(/d/gm), '{d}');
  format = format.replace(new RegExp(/H/gm), '{H}');
  format = format.replace(new RegExp(/i/gm), '{i}');
  format = format.replace(new RegExp(/s/gm), '{s}');
  if (stamp == 'now') stamp = (new Date()).getTime();
  if (typeof stamp === 'object') {

  } else {
    if ((typeof stamp === 'string')) {
      if ((/^[0-9]+$/.test(stamp))) {
        // support "1548221490638"
        stamp = parseInt(stamp);
      } else {
        // support safari
        // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
        stamp = stamp.replace(new RegExp(/-/gm), '/');
      }
    }

    if ((typeof stamp === 'number') && (stamp.toString().length === 10)) {
      stamp = stamp * 1000
    }
    stamp = new Date(stamp)
  }
  
  const formatObj = {
    Y: stamp.getFullYear(),
    m: stamp.getMonth() + 1,
    d: stamp.getDate(),
    H: stamp.getHours(),
    i: stamp.getMinutes(),
    s: stamp.getSeconds(),
    a: stamp.getDay()
  }
	const time_str = format.replace(/{([YmdHisa])+}/g, (result, key) => {
		const value = formatObj[key]
		// Note: getDay() returns 0 on Sunday
		if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value ] }
		return value.toString().padStart(2, '0')
	})
	return time_str
}
//判断显示条件
export function isArray(val){
  return Array.isArray(val);
}
export function isString(val,onlySting = false){
  if (onlySting){
    return  Object.prototype.toString.call(val).slice( 8, -1) == 'String';
  } else {
    let type = Object.prototype.toString.call(val).slice( 8, -1);
    return type == 'String' || type == 'Number';
  }
  
}
export function isObject(val){
  return  Object.prototype.toString.call(val).slice( 8, -1) == 'Object';
}
export function isNum(val){
  return  Object.prototype.toString.call(val).slice( 8, -1) == 'Number';
}
export function isBoolean(val){
  return  Object.prototype.toString.call(val).slice( 8, -1) == 'Boolean';
}
export function checkCondition(data,condition = ''){
  if (!isArray(condition)) throw new Error('条件必须为数组');
  let dataVal = '';
  let conditionVal = '';
  let exp = '';
  let param1 = condition[0];
  if (isString(param1)){
    //['name',1],用data.name
    dataVal = data[param1];
  } else if (isArray(param1)){
    //[['name','value'],1]，用data.name.value
    if (data[param1[0]]) {
      dataVal = data[param1[0]][param1[1]];
    } else {
      return  false;
    }
    
  }
  if (typeof(dataVal) == 'undefined') return false;
  if (condition.length == 2){
    let param2 = condition[1];
    if (isString(param2)){
      //['name',1],用1
      conditionVal = param2;
    } else if (isArray(param2)){
      //[['name','value'],['cname','value']]，用data.cname.value
      conditionVal = data[param2[0]][param2[1]];;
    }
    if (typeof(conditionVal) == 'undefined') return false;
    return dataVal.toString() == conditionVal.toString();
  } else if (condition.length  == 3) {
    //[['name','value'],'=',['cname','value']]
    //第二个为比较标识
    exp = condition[1];
    let param3 = condition[2];
    if (isString(param3)){
      conditionVal = param3;
    } else  if (isArray(param3)){
      conditionVal = data[param3[0]][param3[1]];
    }
    if (typeof(conditionVal) == 'undefined') return false;
  } else if (condition.length  == 4){
    //[['name','value'],'in','multi',[['cname','value'],1,2]]
    if (condition[2] != 'multi') return false;
    exp = condition[1];
    conditionVal = condition[3];
  }
  
  switch (exp){
    case '=' :
      return dataVal.toString() == conditionVal.toString();
    case '>' :
      return dataVal > conditionVal;
    case '>=':
      return dataVal >= conditionVal;
    case '<' :
      return dataVal < conditionVal;
    case '<=' :
      return dataVal <= conditionVal;
    case '!=' :
      return dataVal != conditionVal;
    case '<>' :
      return dataVal != conditionVal;
    case 'in' :
      return conditionVal.find(findItem=>{
        if (isArray(findItem)){
          return data[findItem[0]][findItem[1]] == dataVal;
        } else {
          return findItem == dataVal
        }
      });
    default :
      return true;
  }
}
//获取随机数
export function mtRand(minNum,maxNum){
  switch(arguments.length){ 
    case 1: 
      return parseInt(Math.random()*minNum+1,10); 
      break; 
    case 2: 
      return parseInt(Math.random()*(maxNum-minNum+1)+minNum,10); 
      break; 
    default: 
      return 0; 
      break; 
  }
}

/**
 * Parse the time to string
 * @param {(Object|string|number)} time
 * @param {string} cFormat
 * @returns {string | null}
 */
export function parseTime(time, cFormat) {
  if (arguments.length === 0) {
    return null
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
  let date
  if (typeof time === 'object') {
    date = time
  } else {
    if ((typeof time === 'string')) {
      if ((/^[0-9]+$/.test(time))) {
        // support "1548221490638"
        time = parseInt(time)
      } else {
        // support safari
        // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
        time = time.replace(new RegExp(/-/gm), '/')
      }
    }

    if ((typeof time === 'number') && (time.toString().length === 10)) {
      time = time * 1000
    }
    date = new Date(time)
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const time_str = format.replace(/{([ymdhisa])+}/g, (result, key) => {
    const value = formatObj[key]
    // Note: getDay() returns 0 on Sunday
    if (key === 'a') { return ['日', '一', '二', '三', '四', '五', '六'][value ] }
    return value.toString().padStart(2, '0')
  })
  return time_str
}

/**
 * @param {number} time
 * @param {string} option
 * @returns {string}
 */
export function formatTime(time, option) {
  if (('' + time).length === 10) {
    time = parseInt(time) * 1000
  } else {
    time = +time
  }
  const d = new Date(time)
  const now = Date.now()

  const diff = (now - d) / 1000

  if (diff < 30) {
    return '刚刚'
  } else if (diff < 3600) {
    // less 1 hour
    return Math.ceil(diff / 60) + '分钟前'
  } else if (diff < 3600 * 24) {
    return Math.ceil(diff / 3600) + '小时前'
  } else if (diff < 3600 * 24 * 2) {
    return '1天前'
  }
  if (option) {
    return parseTime(time, option)
  } else {
    return (
      d.getMonth() +
      1 +
      '月' +
      d.getDate() +
      '日' +
      d.getHours() +
      '时' +
      d.getMinutes() +
      '分'
    )
  }
}

/**
 * @param {string} url
 * @returns {Object}
 */
export function getQueryObject(url) {
  url = url == null ? window.location.href : url
  const search = url.substring(url.lastIndexOf('?') + 1)
  const obj = {}
  const reg = /([^?&=]+)=([^?&=]*)/g
  search.replace(reg, (rs, $1, $2) => {
    const name = decodeURIComponent($1)
    let val = decodeURIComponent($2)
    val = String(val)
    obj[name] = val
    return rs
  })
  return obj
}

/**
 * @param {string} input value
 * @returns {number} output value
 */
export function byteLength(str) {
  // returns the byte length of an utf8 string
  let s = str.length
  for (var i = str.length - 1; i >= 0; i--) {
    const code = str.charCodeAt(i)
    if (code > 0x7f && code <= 0x7ff) s++
    else if (code > 0x7ff && code <= 0xffff) s += 2
    if (code >= 0xDC00 && code <= 0xDFFF) i--
  }
  return s
}

/**
 * @param {Array} actual
 * @returns {Array}
 */
export function cleanArray(actual) {
  const newArray = []
  for (let i = 0; i < actual.length; i++) {
    if (actual[i]) {
      newArray.push(actual[i])
    }
  }
  return newArray
}

/**
 * @param {Object} json
 * @returns {Array}
 */
export function param(json) {
  if (!json) return ''
  return cleanArray(
    Object.keys(json).map(key => {
      if (json[key] === undefined) return ''
      return encodeURIComponent(key) + '=' + encodeURIComponent(json[key])
    })
  ).join('&')
}

/**
 * @param {string} url
 * @returns {Object}
 */
export function param2Obj(url) {
  const search = url.split('?')[1]
  if (!search) {
    return {}
  }
  return JSON.parse(
    '{"' +
      decodeURIComponent(search)
        .replace(/"/g, '\\"')
        .replace(/&/g, '","')
        .replace(/=/g, '":"')
        .replace(/\+/g, ' ') +
      '"}'
  )
}

/**
 * @param {string} val
 * @returns {string}
 */
export function html2Text(val) {
  const div = document.createElement('div')
  div.innerHTML = val
  return div.textContent || div.innerText
}

/**
 * Merges two objects, giving the last one precedence
 * @param {Object} target
 * @param {(Object|Array)} source
 * @returns {Object}
 */
export function objectMerge(target, source) {
  if (typeof target !== 'object') {
    target = {}
  }
  if (Array.isArray(source)) {
    return source.slice()
  }
  Object.keys(source).forEach(property => {
    const sourceProperty = source[property]
    if (typeof sourceProperty === 'object') {
      target[property] = objectMerge(target[property], sourceProperty)
    } else {
      target[property] = sourceProperty
    }
  })
  return target
}

/**
 * @param {HTMLElement} element
 * @param {string} className
 */
export function toggleClass(element, className) {
  if (!element || !className) {
    return
  }
  let classString = element.className
  const nameIndex = classString.indexOf(className)
  if (nameIndex === -1) {
    classString += '' + className
  } else {
    classString =
      classString.substr(0, nameIndex) +
      classString.substr(nameIndex + className.length)
  }
  element.className = classString
}


/**
 * @param {Function} func
 * @param {number} wait
 * @param {boolean} immediate
 * @return {*}
 */
export function debounce(func, wait, immediate) {
  let timeout, args, context, timestamp, result

  const later = function() {
    // 据上一次触发时间间隔
    const last = +new Date() - timestamp

    // 上次被包装函数被调用时间间隔 last 小于设定时间间隔 wait
    if (last < wait && last > 0) {
      timeout = setTimeout(later, wait - last)
    } else {
      timeout = null
      // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
      if (!immediate) {
        result = func.apply(context, args)
        if (!timeout) context = args = null
      }
    }
  }

  return function(...args) {
    context = this
    timestamp = +new Date()
    const callNow = immediate && !timeout
    // 如果延时不存在，重新设定延时
    if (!timeout) timeout = setTimeout(later, wait)
    if (callNow) {
      result = func.apply(context, args)
      context = args = null
    }

    return result
  }
}

/**
 * This is just a simple version of deep copy
 * Has a lot of edge cases bug
 * If you want to use a perfect deep copy, use lodash's _.cloneDeep
 * @param {Object} source
 * @returns {Object}
 */
export function deepClone(source) {
  if (!source && typeof source !== 'object') {
    throw new Error('error arguments', 'deepClone')
  }
  const targetObj = source.constructor === Array ? [] : {}
  Object.keys(source).forEach(keys => {
    if (source[keys] && typeof source[keys] === 'object') {
      targetObj[keys] = deepClone(source[keys])
    } else {
      targetObj[keys] = source[keys]
    }
  })
  return targetObj
}

/**
 * @param {Array} arr
 * @returns {Array}
 */
export function uniqueArr(arr) {
  return Array.from(new Set(arr))
}

/**
 * @returns {string}
 */
export function createUniqueString() {
  const timestamp = +new Date() + ''
  const randomNum = parseInt((1 + Math.random()) * 65536) + ''
  return (+(randomNum + timestamp)).toString(32)
}

/**
 * Check if an element has a class
 * @param {HTMLElement} elm
 * @param {string} cls
 * @returns {boolean}
 */
export function hasClass(ele, cls) {
  return !!ele.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'))
}

/**
 * Add class to element
 * @param {HTMLElement} elm
 * @param {string} cls
 */
export function addClass(ele, cls) {
  if (!hasClass(ele, cls)) ele.className += ' ' + cls
}

/**
 * Remove class from element
 * @param {HTMLElement} elm
 * @param {string} cls
 */
export function removeClass(ele, cls) {
  if (hasClass(ele, cls)) {
    const reg = new RegExp('(\\s|^)' + cls + '(\\s|$)')
    ele.className = ele.className.replace(reg, ' ')
  }
}
